Low EMF compact duct spacer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8783631
APP PUB NO 20140034790A1
SERIAL NO

13869676

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Conduit spacers useful in preparing duct banks with reduced electromagnetic fields (EMF) are disclosed. The conduit spacers are designed to maximize phase cancellation of EMF from a closely-spaced series of electric power cables placed in conduits supported underground by the conduit spacers. The spacers are also designed to minimize the EMF above ground by reducing the distance needed to bury the cables for a given EMF above ground. In one embodiment, the spacers place conduits adjacent one another for maximum cancellation of a single three-phase cable installation. In another embodiment, the spacers place conduits adjacent one another for maximum cancellation for a dual three-phase cable installation, including cross-phase cancellation, e.g., A-B-C and C-B-A.

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Patent Owner(s)

  • UNDERGROUND DEVICES, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McCoy, Donald P Lake Forest, US 35 364

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